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Montana, Butte/Blackfoot Region

Air Quality Alert

Statement as of 9:00 AM MDT on August 21, 2017

Expires 11:00 AM EDT on August 22, 2017


... Air quality alert in effect until 900am MDT Tuesday...

The Montana department of environmental quality has issued an air
quality alert for Granite, Missoula, and Ravalli counties in effect
until further notice due to fire activity in west-central Montana.
Air quality is expected to deteriorate each morning before improving
briefly in the afternoon under stable conditions. The stable
conditions are expected to persist through Wednesday. Smoke from the
Rice Ridge fire is causing hazardous air quality in Seeley Lake
between midnight and noon. The Missoula city-County health department
recommends residents spend as little night time as possible in Seeley
Lake due to the dangerous overnight pollution levels. This alert
will be updated again at 900am 8/22/2017.

An air quality alert means that particulates have been trending
upwards and that an exceedence of the 24 hour National ambient air
quality Standard (naaqs) has occurred or may occur in the near
future.

As of 900am, particulate levels in Seeley Lake are hazardous

As of 900am, particulate levels in Florence and Lolo are very
unhealthy

As of 900am, particulate levels in Drummond are unhealthy

As of 900am, particulate levels in Arlee, Hamilton, and Philipsburg
are unhealthy for sensitive groups

As of 900am, particulate levels in frencthown and Missoula are
moderate

When air quality is hazardous... state and local health officials
recommend that everyone should avoid any outdoor exertion; people
with respiratory or heart disease, the elderly, and children should
remain indoors.

When air quality is very unhealthy... state and local health
officials recommend that people with respiratory or heart disease,
the elderly, and children should avoid any outdoor activity; everyone
else should avoid prolonged exertion.

When air quality is unhealthy... state and local health officials
recommend that people with respiratory or heart disease, the elderly,
and children should avoid prolonged exertion; everyone else should
limit prolonged exertion.

When air quality is unhealthy for sensitive groups... state and local
health officials recommend that people with respiratory or heart
disease, the elderly and children should limit prolonged exertion.

When air quality is moderate... state and local health officials
recommend that unusually sensitive people should consider reducing
prolonged or heavy exertion.

For more information visit the Montana department of environmental
quality at www.Todaysair.Mt.Gov




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